Object Oriented Perl was incomplete. How about:
O++++ I am Damian Conway
O+++ I have written a large application with OOP
O++ I have written an OOP module and know what @ISA is for.
O+ I have written an OOP module, but never used inheritence
O I have used other people's OO modules.
O- I've heard of OOP and would like to learn it someday.
O-- I've heard of OOP and think its a joke
O--- I've never heard of OOP or don't understand OOP.
O! I am Tom Christiansen